1960. No edition remarks. 274 pages. No dust jacket. Green cloth covered boards with gilt. Black and white photographs and diagrams. Colour frontispiece. Front of dust jacket affixed to pastedown. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. Boards have light shelf wear with minor corner bumping and crushing to spine ends. Gilt lettering to spine is slightly dulled. Some mild marks and staining to surfaces.